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On the magnetic behavior of BSCCO(2223) Ag tapes

Publié dansPhysica. C, Superconductivity, vol. 251, no. 1-2, p. 61-70
Date de publication1995
Résumé

Pressed and rolled BSCCO(2223) Ag tapes have been widely characterized by SQUID magnetometry with the applied field both parallel and perpendicular to the c-axis. The main results can be summarized as follows: (1) at low temperature (T = 5 K), the anisotropy of the indashplane and out-of-plane current densities Jab/Jc is estimated to be 50; (2) the magnetic response of the tapes indicates that both intergranular (transport) and intragranular contributions to the magnetic moment are present; (3) the samples show a strong degradation; (4) the hysteresis loops show a certain degree of erratic behavior due to frequent jumps; (5) besides this erratic behavior, other anomalies of the hysteresis loops are present: in particular the anomalous field position of the maxima of the magnetization; (6) in bent samples, representing the intragranular magnetization only, all the anomalies disappear and the hysteresis loops are regular; (7) the intergranular magnetization, obtained by subtraction of the magnetic moments measured on the not-bent and bent sample, gives a current density which is irreversible for increasing and decreasing magnetic field, as seen also in transport measurements.

Citation (format ISO)
CIMBERLE, M.R. et al. On the magnetic behavior of BSCCO(2223) Ag tapes. In: Physica. C, Superconductivity, 1995, vol. 251, n° 1-2, p. 61–70. doi: 10.1016/0921-4534(95)00371-1
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ISSN du journal0921-4534
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